Ice box



FIG. 1 is a perspective view of an ice box showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines are for the purposes of illustrating portions of theice box and form no part of the claimed design.

CLAIM The ornamental design for an ice box, as shown and described.